In the diagram, the single stones are all in atari. The only liberties left are the circled intersections.
The five black stones on the top right are in atari as well. The only liberty they have left is the circled intersection.
Spot the Atari!
Unable to see which stones are under atari? Some exercises can be found at Spot the Atari.
By the way, hatari is the word for 'danger' in Kiswahili. Thought you ought to know that. Charles
See also: